A common mistake people make is taking idiomatic expressions too literally.

For example:

• “Avoir le cafard” (which means "to have the cockroach") doesn’t really mean you have a bug problem! It actually means you feel sad.
• “Casser les pieds” (translated as "to break someone's feet") doesn't mean you're hurting someone’s feet. It really means you’re annoying someone.

These funny phrases can confuse learners, but understanding these cultural details can really help you speak the language better.

It’s all about knowing the context and embracing the unique bits of the language!